1. Biosphere The living part of the world Similar words are
environments, ecosystems, biomes
Examples of things in the biosphere
Animals, plants, bacteria, insects, and viruses
How does the biosphere affect humans?
It’s the food we eat, the plants that we grow, provides oxygen for us to breathe, pets for comfort

2. Ecosystems What is an environment?
It is a combination of the living and nonliving factors that interact with each other
Everything in the world falls into either a living or nonliving thing
The environment is also known as an Ecosystem
The study of relationships of abiotic and biotic factors

3. Ecosystems Abiotic Factors Non living parts of an ecosystem
These materials will provide the nutrients and materials needed to support the living part of an ecosystem
Examples of Abiotic Factors:
Samples of living factors that need nonliving factors:
Plants need water and nutrients and carbon dioxide
Animals need water and oxygen and vitamins

4. Ecosystems Samples of what happens when a biotic factor dies out:
If a forest fire moves through a forest, the birds fly off, the trees would be burnt, the air would be smoky, but the soil would be enriched with nutrients
Biotic Factors Living parts of an ecosystem
These are organisms that exist in nature and balance the living world
If part of the biotic part of an ecosystem dies, what happens to the rest of the system?
Increases and Decreases in organisms
Examples of Biotic factors:

5. Natural VS Non-natural Changes
Natural Changes to an Ecosystem:
Non-natural Changes to an Ecosystem:

6. Biomes
Specific types of ecosystems and environments that have certain types of climates and biotic factors
Three Types
Polar
Temperate
Tropical

7. Polar Biome

8. Polar Biomes
Climate Conditions
Animals and Plants

9. Temperate Biomes

10. Temperate Biomes
Climate Conditions
Animals and Plants

11. Tropical Biomes

12. Tropical Biomes
Climate Conditions
Animals and Plants

13. Relationships in Biomes
Climates will shape the types of animals and plants that are found in them
Tropical biomes will have increased types of animals and plants
Why? Animals and plants tend to grow and reproduce more in warmer, wetter climates
Polar biomes will have decreased types of animals and plants
Why? Colder climates are harsh conditions for plants to grow in, which means less food for animals
Temperate biomes have larger human populations
Why? Humans prefer the milder climates

14. Describe this Biome

15. Describe this Biome

16. Name the Abiotic and Biotic Factors

17. Name the Abiotic and Biotic Factors

18. Organize the following words into TWO lists, Abiotic and Biotic Factors:
A cell

19. Food Webs
Because all of the organisms in an ecosystem are connected, they are all joined together in large food webs of interconnectedness.
Food webs are defined as collections of food chains, where one species is eating another, which eats another, which eats another until you reach a top predator

20. Food Webs Each species in a food web is in a population
A population is defined as a collection of the same species living the same area
Minor to major changes in food webs can lead to ripples that can flow from one part of the web to the next
If a top predator dies, then there will be an increase in the population that it eats
If a drought occurs, then your producers (plants) die off which means a lot of animals that each plants is have a decrease in their populations

23. Changes to a Food Web If the change is natural:
It is easier for a food web to recover from
Consumers can change their habits more quickly to prevent starvation
In most cases, the change is slow
If the change is unnatural:
Food webs are disturbed greater
Producers are the ones that feel the change the most
In most cases, the change is faster and food webs do not recover as fast